Dinan Valved Catback Exhaust - Black Tips - BMW G01 X3 M40i / G02 X4 M40i

The Dinan Valved Catback for the BMW G01 X3 M40i and G02 X4 M40i eliminates the factory central collector and resonator while simplifying the routing to a single unrestricted pipe, abandoning the OEM single-to-dual split in favor of a straighter, freer-flowing path. That pipe feeds into a Helmholtz-tuned muffler, a resonance-based design that targets and cancels the frequencies responsible for interior drone while shaping the Dinan exhaust character. The factory valve is retained, providing a genuine range from composed cruising at low RPM to an aggressive open-pipe note under hard acceleration. Pair the system with an aftermarket valve remote for on-demand manual control at any speed.

Features:

+ Full catback system, eliminates OEM central collector and resonator
+ Simplified single-pipe routing for unrestricted, straight-through flow
+ Helmholtz-tuned muffler eliminates drone frequencies while shaping tone
+ Factory exhaust valve retained for quiet cruise and open-pipe acceleration
+ Compatible with aftermarket exhaust valve remote for manual control
+ Weight reduction vs OEM center section
+ Fits BMW G01 X3 M40i and G02 X4 M40i with B58 engine